Remove all makeup, especially mascara, eyeliner, and eyeshadow, and skip any oil-based skincare or makeup products around your eyes. Clean, bare lashes allow the extensions to adhere better. A lash clean will need to be added to service if there is too much mascara on the lashes. Lash Extensions cannot adhere well if the lashes are not clean and a Lash Lift will not perform as well also if the lashes are not clean.